Metal barrel



J. L KIRBY. METAL BARREL.

(No Model.)

N.'494',275. Patented Mar. 28, 1893 E INVENTEI WITNESSES- Tm: NORMPETERS cn. PnoYQuwu" wasum UNITED STATES PATENT OFFICE.

JOHN L. KIRBY, OF CAMBRIDGE, ASSIGNOR TO THE DOVER STAMPING COMPANY, OFBOSTON, MASSACHUSETTS.

M ETAL BARREL.

SPECIFICATION forming part of Letters Patent No. 494,275, dated March28, 1893.

Serial No. 430,963. (No model.)

To all whom it may concern.-

Be it known that I, JOHN L. KIRBY, a citizen of the United States,residing at Cambridge, in the county of Middlesex, State ofMassachusetts, have invented a new and useful Improvement in MetalBarrels, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

The invention relates to a barrel made of sheet metal, and stiffened,braced, and protected by longitudinal, hollow angular metallic ribsapplied to the outside of the barrel, and each made of a sheet metalstrip folded or otherwise formed at the center of itslength to provide ahollow angular section and two flanges, by which the rib is affixed bymeans of riveting to the exterior of the barrel. As many of thesereinforcing or bracing hollow angular ribs may be used as desired. Iprefer to set them about seven or eight inches apart.

Referring to the drawings: Figure 1 is a view in perspective of thebarrel. Fig. 2 is a detail view in horizontal section.

The barrel may have any of the well-known forms of construction. Thatrepresented in the drawings comprises the upper ring A, the lower ringB, theintermediate sheet metal section 0, and the bottom D. The section0 laps upon the top and bottom rings and is riveted to them, and itsedges are riveted together or united in any other desired way. To theexterior of the section 0, there are secured the hollow bracing orreinforcing and protecting metallic ribs E. These preferably are made ofsheet metal strips of the desired width, folded or otherwise formed toprovide the hollow angular section e, increasing in Width from its outeredge inwardly, and the flanges e. The flanges bear upon the outersurfaces of the section (land are united thereto by rivets. As many ofthese protecting reinforcing hollow metallic ribs are thus attached tothe barrel as may be desired. They serve to strengthen or bracethe'section C to such an extent that metal plate 'of' thinner gage thanthat now employed for the barrel may be used and a stronger barrelobtained. They also form a lighter, but stiffer and stronger brace andprotector than any now used.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States- A metal can or barrel having abody portion consisting of a cylindrical shell of thin metal continuousthroughout to present a smooth interior, said shell being provided onits outside with a series of longitudinal, hollow, reinforcing andprotecting metallic ribs formed separate from the body of the barrel andprovided on both sides with lateral flanges, said ribs being secured inplace by rivets passing through said flanges and the said shell.

JOHN L. KIRBY.

In presence of F. F. RAYMOND, 2d, J. M. DOLAN.

